Oxygen Isotope Investigation of the Fossil Hydrothermal System in the Comstock Lode Mining District, Nevada

本项目包括对康斯托克矿脉火山岩氧同位素变化的详细研究。将地表样品的氧数据与矿山工作和钻芯样品的数据结合起来，以构建一个重要矿区热液系统的第一个详细的三维图像，这是一个非凡的，也许是独特的机会。这项工作将包括检查几个1公里深的垂直矿井的18个变化，以及准备著名的康弗吉尼亚富矿的同位素截面。这项研究将揭示环流模式和地质因素之间的关键关系，这将促进对这些系统的了解，并可能证明是对矿床的宝贵指导。

This project involves a detailed investigation of oxygen isotope variations in volcanic rocks of the Comstock Lode. A remarkable and perhaps unique opportunity exists to combine oxygen data on surface samples with data on samples from mine workings and drill cores in order to construct the first detailed 3-dimensional image of a hydrothermal system in an important mining district. This work will include examination of 18 variations down several 1-km-deep vertical mine shafts as well as the preparation of an isotopic cross-section of the famous Con Virginia bonanza. The research will disclose critical relationships between circulation patterns and geologic factors that will advance understanding of these systems and may prove to be invaluable guides to ore deposits.